iMac 7,1 RAM problems

Discussion in 'iMac' started by galaxykid, Apr 17, 2012.

  1. macrumors newbie

    Apr 17, 2012
    I recently tried to upgrade my ram from 2x1GB to 2x2GB. The mac wont turn on with both 2GB in. If I put 1x1GB and 1x2GB it will work fine and my mac will recognize the 3GB. I've tried both 2GB and they only work one at a time with a 1GB. Why is this? Should I return the ram? Thanks
  2. macrumors G3

    Jul 23, 2002
    Sol III - Terra
    When you used the 2GB+1GB combination, was the 2GB module always in the same slot? If not you want to try it the other way around.
    It sounds like you may have a memory slot/motherboard issue.
  3. thread starter macrumors newbie

    Apr 17, 2012
    Thanks for your quick reply. I just turned off the mac and swapped the cards and it booted up the same way, 3GB total. So strange. Any other ideas?
  4. macrumors 68000

    Dec 17, 2009
    Folsom, CA
    What are the exact specifications of the new RAM and exactly what brand and model is it? Please answer all questions.
  5. thread starter macrumors newbie

    Apr 17, 2012
    here's a photo of the RAM let me know if you need anything else. thanks

    Attached Files:

  6. macrumors 68040


    Dec 7, 2009
    ^^^These 2GB sticks are PC2 6400. Exchange them to PC2 5300 (stock memory frequency for your model) and it will be OK. Analogical situation is in Mini 2010. Some Macs with some types of RAM just acting like this.
  7. thread starter macrumors newbie

    Apr 17, 2012
    awesome awesome, thanks so much, you rock!

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